How did it come to pass that Canadian coin currency mimics American coin?
Excluding uncommon pieces like silver dollars, 50 cent pieces (both of which I’m not sure of for Canadian currency) their money mimics ours.
I can’t imagine that completely by chance they also chose to use 1, 5, 10, and 25 cent pieces each with the same size, thickness, and color as American currency.

because canada wants to be a part of the US
it doesnt mimic yours, i have currency from both places
and no, we dont want to be like you, sorry to burst your bubble